As you pointed out, cant be 100% sure as it was a quick sighting going the other way. We were travelling slow (around 40-50Km) due to traffic and they were not travelling fast the other way so it was a reasonable look at it. It certainly wasn't the older <2011 model that I am 100% sure about. I did take note of the door and tailgate after seeing the grille as it approached as it caught my attention immediately.
Anything is possible I guess, someone may have custom painted a 2011-13 model to look somewhat like a 14.
However, if they are landing here within a few months as many suggest (say May/June/July) then doing the rounds of the journos before hand makes sense, but it does feel a month or two early if its more like July/August arrival.
There are 591 12/13 GC models for sale on carsales Aus wide (all variants). Im not sure how many they shift a month? The dealer in Brisbane I spoke to the other day said the stock he has is it (approx 10-15 in total) until the next shipment which he expected in July. He didnt mention if it would be a 13 or 14 model. I'll call him Tuesday to see what line he spins me